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08-21-2022
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#1 |
 
Join Date: Oct 2016
Location: Shepparton. Vic. Australia
Posts: 159
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A/C blower fan won?t turn off
Drove home from a car show last weekend and when I got home and turned the engine off, I noticed the A/C - Heater fan was still running. Tuned the key back on and tried the controls on the dash, but made no difference. Turned ignition key off and removed key. Fan still running. Had to disconnect the battery.
Any advise on where to start looking. 1990. #2774 Cheers, Russell 🇦🇺 |
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08-21-2022
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#2 |
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Join Date: Jun 2012
Location: fort worth
Posts: 183
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Re: A/C blower fan won?t turn off
May be a bad blower control module. It's on top of the blower box on the passenger side. May also be the blower motor relay.
Last edited by CamP; 08-21-2022 at 11:32 AM. |
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08-21-2022
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#3 |
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Join Date: Oct 2016
Location: Shepparton. Vic. Australia
Posts: 159
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Re: A/C blower fan won?t turn off
Thanks CamP.
Got to start somewhere. Until l get it sorted, l will have to disconnect the battery each time l stop. PITA. Cheers, Russell 🇦🇺 |
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08-21-2022
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#4 | |
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Join Date: Jun 2012
Location: fort worth
Posts: 183
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Re: A/C blower fan won?t turn off
Quote:
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08-21-2022
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#5 |
 
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,633
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Re: A/C blower fan won?t turn off
or pull the fuse
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08-22-2022
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#6 | |
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Join Date: Oct 2016
Location: Shepparton. Vic. Australia
Posts: 159
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Re: A/C blower fan won?t turn off
Quote:
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08-22-2022
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#7 | |
Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,593
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Re: A/C blower fan won?t turn off
Quote:
 Marty |
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08-22-2022
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#8 |
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Join Date: Jun 2012
Location: fort worth
Posts: 183
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Re: A/C blower fan won?t turn off
The ac fuse may not stop the blower. The blower is wired directly to the battery through a fusible link. The power feed to the blower control module is always hot.
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04-28-2024
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#9 |
 
Join Date: Sep 2008
Location: Speedway, IN
Posts: 133
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A/C blower fan won?t turn off
Same thing just happened to me yesterday when going to a car show-man those things are hard on the cars! What was the fix here? Just getting ready to dig in today.
Sent from my iPhone using ZR-1 Net Registry |
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05-01-2024
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#10 |
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Join Date: Jan 2024
Location: Boston, MA
Posts: 181
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Re: A/C blower fan won?t turn off
My 87 w/C68 did this. The blower motor control module fails in the "on" position and runs until the battery drains.
It looks like this; https://www.ebay.com/itm/19630392277...mis&media=COPY The non-C68 cars have a Blower Motor Resistor which looks very different.
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